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INIS
cretaceous period
100%
fossils
39%
zones
36%
england
33%
correlations
31%
stratigraphy
31%
france
31%
chalk
28%
clays
24%
texas
21%
seas
21%
asteroids
20%
carbon isotopes
20%
origin
19%
foraminifera
18%
usa
17%
europe
17%
eocene epoch
16%
morocco
16%
plates
16%
morphology
15%
surfaces
14%
shells
14%
sea level
13%
water
13%
control
13%
germany
13%
sediments
12%
taxonomy
11%
variations
11%
united kingdom
11%
data
10%
distribution
10%
chalks
10%
geochemistry
9%
tunisia
9%
spain
9%
levels
9%
oceans
8%
carbonates
8%
resolution
7%
deposits
7%
stars
7%
comparative evaluations
7%
india
7%
africa
7%
depth
6%
affinity
6%
range
6%
echinoderms
6%
Earth and Planetary Sciences
Ammonite
38%
Cenomanian
37%
United Kingdom
30%
England
27%
Stratigraphy
24%
Turonian
21%
Albian
20%
Upper Cretaceous
20%
France
19%
Late Cretaceous
18%
Campanian
18%
Carbon 14
17%
Texas
17%
Morocco
16%
Maastrichtian
15%
Sea Level
14%
Biostratigraphy
14%
Fossil Record
14%
Germany
13%
Deep Sea
13%
Planktonic foraminifera
13%
Eocene
13%
Nannofossil
12%
Stratotype
12%
Paleogene
11%
New Species
11%
United Kingdom
11%
Cladistics
11%
United States of America
11%
Lower Cretaceous
10%
Santonian
10%
Tunisia
9%
Tithonian
9%
Late Jurassic
9%
Europe
8%
Spain
8%
Morphology
8%
English
7%
Sequence Stratigraphy
7%
Calcite
6%
India
6%
Hiatus
6%
Early Jurassic
5%
Kimmeridgian
5%
Gaps (Geology)
5%
Cyclostratigraphy
5%
Anticlines
5%
Locale
5%
Foraminifera
5%
Tectonics
5%